Features:1. Convenient connection. It can be detected by simply downloading APP bluetooth connection by mobile phone, and real-time detection of charging status, voltage, current, capacity and other indicators of USB power supply3. Quick identification, able to identify patterns QC2.0 and QC3.05. The quality of charger batteries can be identified by capacity and energy detection7. Help interface. The product comes with a help interface in both Chinese and English. If you encounter problems in use, you can view the help interface8. The screen supports four-way rotation9.1.44 "LCD LCD screen, 6 kinds of dazzle color measuring interface, multi-directional Angle conversion10.After the phone connects to the APP, the detected data can be saved as an EXCEL table, which is convenient for users to view the complete dataSpecification:Product Model:UM34/UM34C (Optional)Display screen:1.44 Inch color LCD displayCurrent measurement range: 0-5.0000A Current measurement resolution: 0.001ACapacity accumulation range: 0-99999mAh Energy measurementrange: 0-999.99Wh Current measurement accuracy: 0.8%+3digitsLoad impedance range: 0.8-9999.9 Time measurement range:0-99h59min59sTemperature range: -10~100/0~200 Temperature measurement error: 3/6Screen brightness setting: 0-5 levels Auto screen off time: 0-9minsCurrent graphing range: 0-4.000ARefresh rate:2Hz Size: 7*3cm/2.8*1.2inWeight: Approx.48g~53g/1.7oz~1.9ozNote:1. UM34 has no communication version and does not support any communication between PC and mobile phone in any case. UM34C is the communication version connected via bluetooth. UM34C does not have PC software, only phone applications.2.Mobile phone 5.0 and above, support 18 languages, Chinese, English and Russia... )4. Some phones are not compatible with our bluetooth board, please buy them carefully, Notsuitable for NOTE8 / S85.Apps:A: the APP only supports 5.0 and above.B: allow the application to run in the background without cleaning up.C: allow applications to self-start.D: keep the application running after the lock screen. Don't clean it up.E: type-c is only used to measure, not support all types -c quick charge, not trigger.Package list:1 x UM Tester Meter1 x box